package com.hyh.model.singleton;

public class Singleton {

	private volatile static  Singleton singleton;
	
	private Singleton() {}
	
	public static Singleton getInstance(){
		if(singleton==null){
			synchronized (Singleton.class) {
				if(singleton==null){
					singleton = new Singleton();
				}
			}
		}
		return singleton;
	}
}
